Point-of-injury extended focused assessment with sonography in trauma (eFAST) may identify life-threatening torso hemorrhage and expedite casualty evacuation. The purpose of this study was to compare combat medic eFAST performance between the novel and conventional ultrasound (US) transducers.

Extended focused assessment with sonography in trauma exam times was faster with the conventional transducers.

Combat medics performed diagnostically accurate eFASTs with both transducer types in a simulated aid station setting after a brief training intervention.

Conventional transducers were rated higher for ease-of-use.

40 medics performed 160 eFASTs.

We found a statistically significant difference in eFAST completion times in favor of conventional transducers.

There was no statistically significant difference between the conventional and novel transducers in terms of diagnostic accuracy and technical adequacy.

Median transducer ease-of-use rating (Likert 1–5 scale) was statistically significant in favor of the conventional transducers.

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